Transition from open-pit to underground – using Integer Programming considering grade uncertainty
MetadataShow full item record
The determination of transition point from open-pit (OP) to underground (UG) is one of the most challenging mining engineering problems. The shallow deposits which vertically extend to considerable depth will have potential to make the transition from OP to UG. In this paper, Mixed Integer Programming (MIP), a well-known operation research technique is introduced to solve the transition problem. Conditional simulation is utilised to generate realisations of the resource model. Thus, the utilisation of the simulated realisations will reduce the geological uncertainty and risk. The aim of this paper is to incorporate MIP model and conditional simulation technique to optimise the transition from OP to UG. As a result, a ‘Transition Envelope’ which represents a zone where the transition might occur is formed.
Showing items related by title, author, creator and subject.
Comparison between Nasal Swabs and Nasopharyngeal Aspirates for, and Effect of Time in Transit on, Isolation of Streptococcus pneumoniae, Staphylococcus aureus, Haemophilus influenzae, and Moraxella catarrhalisCarville, K.; Bowman, J.; Lehmann, Deborah; Riley, T. (2007)pmc logo image Logo of jcm Note: Performing your original search, comparison nasal swabs lehmann, in PubMed Central will retrieve 7 citations. Journal List > J Clin Microbiol > v.45(1); Jan 2007 Abstract ...
Factors affecting student adjustment as they transition from primary to secondary school: a longitudinal investigationVaz, Sharmila Maria Agnella (2010)Transition from primary to secondary school occurs during the developmental period of early adolescence. Mixed findings exist across the literature on the effects of transition on student adjustment outcomes. This has led ...
“Leaps of faith”: parents' and professionals' viewpoints on preparing adolescents on the autism spectrum for leaving schoolHatfield, Megan; Falkmer, Marita; Falkmer, Torbjorn; Ciccarelli, Marina (2017)Adolescents on the autism spectrum experience difficulty transitioning from secondary school to post-school activities, often due to transition planning processes that do not meet their unique needs. This study identified ...